Improvement in portable stoves



Nrrn STATES ATENT Orrron.

FERDINAND A. SCHROEDER, OF JERSEY CITY, NEW JERSEY, ASSIGNOR T HIMSELFAND CHARLES HERMANN BRUEGKNER, OF SAME PLACE.

IMPROVEMENT IN PORTABLE STOVES.

Specification forming part of Letters Patent No. 146,283, dated January6, 1874 application filed Y September 2, 1873.

To all whom it may concern:

Be it known that I, FERDINAND ADoLPH SGHROEDER, of Jersey City, in thecounty of Hudson and State of New Jersey, have invented an ImprovedStove, of which the following is a specification:

Figure l is a vertical central section of my improved stove. Fig. 2 is ahorizontal section of the same on the line c c, Fig. 1. Fig. 3 is a planor top view of the same when the upper lid is removed.

Similar letters of reference indicate corresponding parts in all thegures.

This invention has for its object to economize fuel in the cooking offood and other substances; and consists in the construction of aportable furnace which can be hermetically sealed to prevent, after thefire has been started, the escape of the heat as well as gases developedby the lire, and which willLt-herefore, retain the heat of the fire fora sufficiently long time without consuming; fuel, and thus boil to therequisite extent the matter contained within a vessel placed within thefurnace.

In the accompanying drawing, the letter A represents the case or shellof my improved stove. The same is made of cylindrical or other suitableform, of proper size, and, by preference, of sheet metal; but, if madeof sheet metal, it is made in two thicknesses throughout, between whicha filling of sand, plaster, or other non-heat-conductin g substanceshould be placed. Within this shell A is placed or fixed a suitablegrate, B. An opening at the side of the shell A, leading to the chambera beneath the grate B, serves as adraftflue, and may be completely andherm etically closed by a plug, C, which is, by preference, ofsubstantially the same construction as the shell A, as is fullyindicated in Figs. l and 2. The vessel A is open on top, but can becovered and completely closed by a lid or cover, D, which is also ofsubstantially the same construction as the shell A as to cross-section.E is a pan or vessel, of such size that it may conveniently t thechamber within the shell A above the grate B. The diameter of the vesselE is so much smaller than the interior diameter of the shell A that anannular or other shaped space, b, is formed between these two vessels,as shown in Fig. l. The vessel E is either provided with projecting lugsd d at its upper part, so that it mayr be suspended from the rim or edgeof the vessel A, or it is provided with supports at the lower end, sothat it may stand on the bottom of the vessel A, or on the grate B, orelse suitable internal supports may be arranged within the shell A forthe vessel E to stand upon.

For operation, the apparatus is used as follows: A re is built upon thegrate B, the matter to be cooked placed within the vessel E, and thelatter, when closed, inserted within the shell A, while the cover D isremoved from the saine. 'llhe plug C is also withdrawn, so

th at the tire beneath E may ,get a proper start, the gases escapingaround E through the annular or other shaped passage b. For the escapeof these gases, a chimney-connection may be arranged either at one sideof the shell A or on top, although for ordinary purposes, since theapparatus is portable and easily put out of doors, the escape of smoke,&c., will not be inconvenient. After the re has been properly started,the cover D is closed down upon the vessel A and the plug C inserted, sothat access of air to t-he lire-space will be absolutely prevented. Theheat of the fire will` then be retained as fully as though the fireitself were kept up, and the contents of E will, by-such continuousheat, be boiled, whereupon the lid D may be removed, ithe vessel Ewithdrawn, and its contents used in the manner desired. Thus the fullamount of heat given out by the fire will be utilized for cookingpurposes, and all that portion of the fuel not absolutely consumedbefore the lid D and plug C are closed will4 still be in condition forfuture use. i

I claim as my invention and desire to secure by Letters Patent- Thestove consisting of the shell A, grate F. A. SCHROEDER.

Witnesses A. V. BRIEsnN, llIicHAEL RYAN.

